Supervillains came onto the scene about 10 years ago and remade the world. They run independent city states cared out of the remnants of the US (and probably throughout the world, but horizons have narrowed).
It’s a story of resistance and struggle against an overwhelming foe. How do you bring down a man who can’t be killed? Who has remade the ground for floors deep into solid steel? And how do you coordinate that while on the run from his allies and servants?
It’s fun YA, with a very likable protagonist. I’d strongly recommend it to anyone interested in good YA fiction.